12805893 has 6 divisors (see below), whose sum is σ = 18497414. Its totient is φ = 8537256.

The previous prime is 12805861. The next prime is 12805901. The reversal of 12805893 is 39850821.

It can be written as a sum of positive squares in only one way, i.e., 11819844 + 986049 = 3438^2 + 993^2 .

It is not a de Polignac number, because 12805893 - 2⁵ = 12805861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711430 + ... + 711447.

Almost surely, 2^12805893 is an apocalyptic number.

It is an amenable number.

12805893 is a deficient number, since it is larger than the sum of its proper divisors (5691521).

12805893 is a wasteful number, since it uses less digits than its factorization.

12805893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422883 (or 1422880 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 12805893 is about 3578.5322410173. The cubic root of 12805893 is about 233.9573119588.

The spelling of 12805893 in words is "twelve million, eight hundred five thousand, eight hundred ninety-three".